Hall-effect Speed Sensor HDD

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2/8 Bosch Rexroth AG | Mobile Hydraulics HDD | RE 95 135/06.03Type code / Standard rangeHDD / 2 0TypeHall-effectHDDspeed sensorVersionOne frequency output, 1One output for direction of rotationTwo frequency outputs 2Installation depth16 mm L1632 mm L32Output circuitNPNNPNPPConnectionHDD 1L16HDD 1L32HDD 2L32 HDD 2L16N P N PCore end sleeve ● ● ● ● ADEUTSCH DT04-4P-EP04male connector● – – – DSeries2Index0● = Available– = Not availableDescriptionThe HDD Hall-effect speed sensor is used for contactlessspeed measurement of even very low speeds of rotation. TwoHall-effect semiconductor elements in the sensor measure achange in magnetic flux caused by a ferromagnetic gear onthe sensor. This magnetic flux change is converted intosquare-wave pulse signals by the built-in electronic system.The frequency f of the square-wave voltage emitted by thesensor is calculated from the number of teeth z on thecircumference of the gear wheel and the speed of the driveshaft or PTO shaft, using the following formula:f in secz • n-1f =n in rpm60 z = number of teethThe number of teeth is specified in the catalogue sheet for therelevant axial piston motor.The sensor is suitable for installation in various devices,including the following Rexroth axial piston motors:A2FM __________________________________ see RE 91001A6VM __________________________________ see RE 91604A6VE __________________________________ see RE 91606Before the sensor can be installed, the motors must beprepared for speed measurement by HDD (boss for flange-onconnection).The sensor is available in four basic variants.HDD1 delivers a square-wave signal proportional to thespeed of rotation and a switch signal that identifies thedirection of rotation.HDD2 delivers two square-wave signals that are offset witha 90° phase delay suitable for redundant speed detection.Additionally, these signals can be used to calculate thedirection of rotation using e.g. a Rexroth MC control unit(RE 95050) or RC control unit (RE 95200).Both variants are available with NPN (default) or PNP outputcircuit.
RD 95 135/06.03 | HDD Mobile Hydraulics | Bosch Rexroth AG 3/8Technical DataTable of valuesTypeNominal voltageResidual undulation (DIN 40839, Part 1)HDD1, HDD212 and 24 V DCmax. ± 2 V DCSupply voltage U B , absolute voltage range 8...32 V DCCurrent consumptionmax. 33 mA at 24 V DCCurrent load capacity 500 mA at 24 V and 25°C50 mA at 24 V and 125°CFrequency outputs2 Hz ...6 kHzDirection of rotation signal clockwise highcounter-clockwiselowstationaryundefinedShort-circuit proof againstSupply voltage and earthPolarity mismatch foolproofingyesElectromagnetic compatibilityRadiated interference (Motor vehicles directive 95/54-EC)100 V rms/m;Line-borne interference (ISO 7637-1/-2/-3)Values on requestLoad Dumpmax. 70 VVibration resistance:Sinusoidal vibrations (IEC 60086-2-6)10 g / 57...2000 Hz10 cycles per axisSawtooth vibrations (IEC 60086-2-36)0.05 g 2 / Hz20 ...2000 HzShock resistance: Transport shock (IEC 60068-2-27)15 g / 11 ms3x in each direction (pos./neg.)Continuous shocks (IEC 60068-2-29)25 g / 6 ms1000x in each direction (pos./neg.)Moisture resistance95 % (+25°C at +60°C)Salt spray resistance DIN 50021Type of protection (IEC 60529)with core end sleeveswith DEUTSCH DT04-4P-EP04male connectorOperating temperature (IEC 68-2-14)Storage temperature (IEC 68-2-1, IEC 68-2-2)Housing materialMassInstallation position48 h, 35°C, 5% NaClIP 67 and IP 69 kIP 69 k with mating connector-40°...+125°C-55°...+125°CBrass / plasticapprox. 95 gMeasuring distance 0.3 - 1 mm for module 2Pressure resistance of measuring surfaceany10 bar
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Hall-effect Speed Sensor HDD

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